CN202923625U - Motor driving type automobile auxiliary brake device - Google Patents

Abstract

The utility model discloses a motor-driven auxiliary braking device for automobiles, which comprises a millimeter-wave radar, a radar ECU, a control ECU and a motor. The millimeter-wave radar is connected to the radar ECU, and the radar ECU is connected to the control ECU through a CAN bus. The drive module is connected with the motor. The utility model can be compatible with the original braking system of the self-vehicle and can be switched reliably, and the braking force can be electronically controlled and can respond quickly. When the driver steps on the brake pedal quickly in an emergency, but the stepping force is insufficient, the device will assist and increase the braking force to the maximum in less than 1 second, shortening the braking time in emergency braking. Braking distance, or when the driver is unconscious, the car can automatically take braking measures to control the car when the car is in danger of rear-end collision. The utility model has the advantages of simple structure, low cost and stable performance, and is convenient for popularization and popularization in a wide range.

Description

A motor-driven auxiliary braking device for automobiles

technical field

The utility model belongs to the field of road traffic safety, in particular to a motor-driven auxiliary braking device for automobiles. the

Background technique

With the development of expressways and the increase of vehicle speed, traffic accidents have become a serious problem in modern society, threatening people's lives and property safety day by day. Among them, brake failure on long slopes and frequent braking of urban buses can easily cause brake failure. The phenomenon of thermal recession can induce serious traffic accidents. In order to reduce the occurrence of traffic accidents, a more practical way is to increase the auxiliary braking device of the automobile, which is particularly important for improving the braking effect of the automobile. Therefore, the development of the auxiliary braking system of automobiles It has become an urgent problem to be solved in the field of road traffic safety in our country. Aiming at problems such as the high cost of the hydropneumatic auxiliary braking system and the slow response speed of the electronic vacuum booster (EVB), it is a feasible technical solution to use the motor to drive the auxiliary braking of the vehicle. the

Contents of the invention

Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide a low-cost motor-driven auxiliary braking device for automobiles. the

In order to realize above-mentioned task, the utility model adopts following technical scheme to be realized:

A motor-driven auxiliary braking device for automobiles, including a millimeter-wave radar, a radar ECU, a control ECU and a motor, the millimeter-wave radar is connected to the radar ECU, the radar ECU is connected to the control ECU through a CAN bus, and the control ECU is connected to the motor through a drive module . the

The utility model also has the following technical characteristics:

The millimeter wave radar adopts ARS100 type millimeter wave radar. the

The drive module uses an L298 chip. the

The utility model can be compatible with the original braking system of the self-vehicle and can be switched reliably, and the braking force can be electronically controlled and can respond quickly. When the driver steps on the brake pedal quickly in an emergency, but the stepping force is insufficient, this device will assist, and increase the braking force to the maximum in less than 1 second, shortening the emergency braking time. Braking distance, or when the driver is unconscious, the car can automatically take braking measures to control the car when the car is in danger of rear-end collision. The utility model has the advantages of simple structure, low cost and stable performance, and is convenient for popularization and popularization in a wide range. the

Description of drawings

Fig. 1 is a schematic diagram of the connection relationship of the present invention. the

Below in conjunction with accompanying drawing and embodiment the concrete content of the present utility model is described in further detail. the

Detailed ways

The specific embodiments of the present utility model are provided below, and it should be noted that the present utility model is not limited to the following specific embodiments, and all equivalent transformations done on the basis of the technical solution of the application all fall into the protection scope of the present utility model. the

According to the above technical solution, as shown in Figure 1, a motor-driven auxiliary braking device for automobiles includes a millimeter-wave radar, a radar ECU, a control ECU and a motor. The millimeter-wave radar is connected to the radar ECU. The ECU is connected, and the control ECU is connected to the motor through the drive module. the

The millimeter-wave radar adopts the ARS100 millimeter-wave radar produced by ADC Company of Germany. It is used to collect the relative speed of the vehicle in front and the vehicle in front, and the output collection information is transmitted to the radar ECU. The ARS100 millimeter-wave radar system is a millimeter-wave radar system specially designed for automotive applications. It uses microwaves in the millimeter-wave band as the ranging medium, uses the principle of pulse method to obtain the distance of the target, and uses the microwave Doppler effect to obtain The relative velocity of the target. The radar used in the utility model has a wide detection range. It is a millimeter-wave radar specially designed for automotive applications. It has high precision. It uses the microwave in the millimeter-wave band as the ranging medium and uses the principle of pulse method to obtain the distance of the target. , using the microwave Doppler effect to obtain the relative velocity of the target, which provides a guarantee for accurately judging the position and velocity relationship between the ego vehicle and the front vehicle. the

The radar ECU and the control ECU have a built-in safety distance control strategy, which is used to calculate the collected information such as the relative speed of the own vehicle and the vehicle in front to obtain the braking safety distance. the

The drive module adopts L298 chip and is installed near the motor to control the work of the drive motor. the

The motor is installed near the brake master cylinder of the vehicle, connected with the brake pedal, and assists the brake pedal to perform braking. The main technical parameters are as follows: the motor power is 100W, the rated working voltage is 24V (the conversion power module needs to be added to the control device), the rated working current is 5A, the speed is 1500r/min, and the reduction ratio i=200. the

When the utility model is in the working state, the millimeter wave radar measures the distance and relative speed between the vehicle in front and the vehicle in front in real time, and then transmits the measurement data to the central processing unit radar ECU, and the radar ECU combines the speed measured by the vehicle speed sensor to perform target Calculate the distance, and transmit the calculation result to the CAN bus control system. The CAN bus control system analyzes the received data signal, calculates the safety distance control, calculates the current safety state of the car and the braking control amount, and sends the distance result Passed to the control ECU, the built-in braking control strategy of the control ECU, when the trigger limit of the auxiliary braking device is reached, the control ECU connects the working circuit in the drive module, drives the motor to work through the drive module, and pulls the brake pedal to replace the driver The action completes the desired braking process. the

Claims (3)

1. motor-driven auxiliary brake device for automobile, comprise millimeter wave radar, radar ECU, control ECU and motor, it is characterized in that, millimeter wave radar is connected with radar ECU, radar ECU is connected with control ECU by the CAN bus, controls ECU and is connected with motor by driver module.

2. motor-driven auxiliary brake device for automobile according to claim 1, is characterized in that, described millimeter wave radar adopts ARSl00 type millimeter wave radar.

3. motor-driven auxiliary brake device for automobile according to claim 1, is characterized in that, described driver module adopts the L298 chip.

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